If you want to put in a bit more work, the most thematic option is to restore the land to how it looked at the end of setup, including the first Explore and all Spirit, Adversary, and Scenario setup. If you need to add Presence for a Spirit, use their destroyed Presence; if they don't have enough destroyed Presence, add as much as you can. Depending on the exact combination of Adversaries, Scenarios, and Spirits, this may require a good memory or photographs of the starting board state to track variable setup options (e.g., where Ocean's Hungry Grasp put its second Presence).
Tags: Spirit setup, Island setup, Disease, Beasts, 1 more...